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Medicine
Light criteria for pleural effusion are all except -
Effusion protein/serum protein ratio greater than 0.5
Effusion lactage dehydrogenase (LDH)/serum LDH ratio greater than 0.6
Effusion LDH level greater than two-thirds the upper limit of the laboratory's reference range of serum LDH
Effusion sugar is less than 2/3rd of blood sugar
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